BUSINESS SEGMENT - Schedule of Revenue by Geographical Location (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Revenues | $ 15,820 | $ 12,375 | $ 42,991 | $ 33,939 |
| U.S. | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Revenues | 12,421 | 9,556 | 32,532 | 26,085 |
| International | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Revenues | $ 3,399 | $ 2,819 | $ 10,459 | $ 7,854 |